Sterilizer



FIG. 1 is a rear elevational view of a sterilizer showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a left side elevational view thereof. 

The ornamental design for a sterilizer, as shown and described. 